Installing PHP Mess Detector (phpmd) on OS X

cd ~/

If is there “wget” command in your system. (You can install via Brew (HomeBrew)).

wget -nc http://static.phpmd.org/php/latest/phpmd.phar

or download via cURL

curl -OL http://static.phpmd.org/php/latest/phpmd.phar

and then

sudo mv phpmd.phar /usr/local/bin/phpmd
sudo chmod +x /usr/local/bin/phpmd

https://phpmd.org